I'm trying to hook up a 4 pin flat to this vehicle but can not get the brakes to work. there are four wires <br />white =ground<br />green = right turn<br />yellow = left turn <br />brown = running<br />This truck has separate bulbs for the turning lights .When I hook up the brown to the running lights (head lights) I do not get any brakes. Any ideas on how to hook up the brake lights? Thanks Bcmagna